I have just spent some time in the chat talking to synchronus about this. Apparently he got a chip burnt by a store and does not have a programmer to verify it. Now the circuit "doesn't work".
He left the diode out of the circuit because someone told him it would make problems. I do not know what she/he replaced it with instead, if anything.
I have suggested that she/he takes pictures of the circuit and posts them on here for us to see. I also suggest that she/he takes a voltage reading at pin 14 of the PIC (+V) to see if it has power.
And finally, please be a little bit more clear. Just because you cannot compile the code yourself does not mean it is broken. The tic-tac-toe site is very well written and has some excellent instructions.